/*
 * TeleStax, Open Source Cloud Communications  
 * Copyright 2012, Telestax Inc and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.protocols.ss7.cap.service.circuitSwitchedCall.primitive;

import java.io.IOException;

import javolution.xml.XMLFormat;
import javolution.xml.stream.XMLStreamException;

import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.cap.api.CAPException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentExceptionReason;
import org.mobicents.protocols.ss7.cap.api.service.circuitSwitchedCall.primitive.CallSegmentToCancel;
import org.mobicents.protocols.ss7.cap.primitives.CAPAsnPrimitive;

/**
 * 
 * @author sergey vetyutnev
 * @author Amit Bhayani
 * 
 */
public class CallSegmentToCancelImpl implements CallSegmentToCancel, CAPAsnPrimitive {

	private static final String INVOKE_ID = "invokeID";
	private static final String CALL_SEGMENT_ID = "callSegmentID";

	public static final int _ID_invokeID = 0;
	public static final int _ID_callSegmentID = 1;

	public static final String _PrimitiveName = "CallSegmentToCancel";

	private Integer invokeID;
	private Integer callSegmentID;

	public CallSegmentToCancelImpl() {
	}

	public CallSegmentToCancelImpl(Integer invokeID, Integer callSegmentID) {
		this.invokeID = invokeID;
		this.callSegmentID = callSegmentID;
	}

	@Override
	public Integer getInvokeID() {
		return invokeID;
	}

	@Override
	public Integer getCallSegmentID() {
		return callSegmentID;
	}

	@Override
	public int getTag() throws CAPException {
		return Tag.SEQUENCE;
	}

	@Override
	public int getTagClass() {
		return Tag.CLASS_UNIVERSAL;
	}

	@Override
	public boolean getIsPrimitive() {
		return false;
	}

	@Override
	public void decodeAll(AsnInputStream ansIS) throws CAPParsingComponentException {

		try {
			int length = ansIS.readLength();
			this._decode(ansIS, length);
		} catch (IOException e) {
			throw new CAPParsingComponentException("IOException when decoding " + _PrimitiveName + ": "
					+ e.getMessage(), e, CAPParsingComponentExceptionReason.MistypedParameter);
		} catch (AsnException e) {
			throw new CAPParsingComponentException("AsnException when decoding " + _PrimitiveName + ": "
					+ e.getMessage(), e, CAPParsingComponentExceptionReason.MistypedParameter);
		}
	}

	@Override
	public void decodeData(AsnInputStream ansIS, int length) throws CAPParsingComponentException {

		try {
			this._decode(ansIS, length);
		} catch (IOException e) {
			throw new CAPParsingComponentException("IOException when decoding " + _PrimitiveName + ": "
					+ e.getMessage(), e, CAPParsingComponentExceptionReason.MistypedParameter);
		} catch (AsnException e) {
			throw new CAPParsingComponentException("AsnException when decoding " + _PrimitiveName + ": "
					+ e.getMessage(), e, CAPParsingComponentExceptionReason.MistypedParameter);
		}
	}

	private void _decode(AsnInputStream ansIS, int length) throws CAPParsingComponentException, IOException,
			AsnException {

		this.invokeID = null;
		this.callSegmentID = null;

		AsnInputStream ais = ansIS.readSequenceStreamData(length);
		while (true) {
			if (ais.available() == 0)
				break;

			int tag = ais.readTag();

			if (ais.getTagClass() == Tag.CLASS_CONTEXT_SPECIFIC) {
				switch (tag) {
				case _ID_invokeID:
					this.invokeID = (int) ais.readInteger();
					break;
				case _ID_callSegmentID:
					this.callSegmentID = (int) ais.readInteger();
					break;

				default:
					ais.advanceElement();
					break;
				}
			} else {
				ais.advanceElement();
			}
		}
	}

	@Override
	public void encodeAll(AsnOutputStream asnOs) throws CAPException {
		this.encodeAll(asnOs, this.getTagClass(), this.getTag());

	}

	@Override
	public void encodeAll(AsnOutputStream asnOs, int tagClass, int tag) throws CAPException {

		try {
			asnOs.writeTag(tagClass, this.getIsPrimitive(), tag);
			int pos = asnOs.StartContentDefiniteLength();
			this.encodeData(asnOs);
			asnOs.FinalizeContent(pos);
		} catch (AsnException e) {
			throw new CAPException("AsnException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		}
	}

	@Override
	public void encodeData(AsnOutputStream aos) throws CAPException {

		try {
			if (this.invokeID != null)
				aos.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_invokeID, this.invokeID);
			if (this.callSegmentID != null)
				aos.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_callSegmentID, this.callSegmentID);

		} catch (IOException e) {
			throw new CAPException("IOException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		} catch (AsnException e) {
			throw new CAPException("AsnException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		}
	}

	@Override
	public String toString() {

		StringBuilder sb = new StringBuilder();
		sb.append(_PrimitiveName);
		sb.append(" [");

		if (this.invokeID != null) {
			sb.append("invokeID=");
			sb.append(this.invokeID);
		}
		if (this.callSegmentID != null) {
			sb.append(", callSegmentID=");
			sb.append(this.callSegmentID);
		}

		sb.append("]");

		return sb.toString();
	}

	/**
	 * XML Serialization/Deserialization
	 */
	protected static final XMLFormat<CallSegmentToCancelImpl> CALL_SEGMENT_TO_CANCEL_XML = new XMLFormat<CallSegmentToCancelImpl>(
			CallSegmentToCancelImpl.class) {

		@Override
		public void read(javolution.xml.XMLFormat.InputElement xml, CallSegmentToCancelImpl callSegmentToCancel)
				throws XMLStreamException {

			callSegmentToCancel.invokeID = xml.get(INVOKE_ID, Integer.class);
			callSegmentToCancel.callSegmentID = xml.get(CALL_SEGMENT_ID, Integer.class);
		}

		@Override
		public void write(CallSegmentToCancelImpl callSegmentToCancel, javolution.xml.XMLFormat.OutputElement xml)
				throws XMLStreamException {

			if (callSegmentToCancel.invokeID != null) {
				xml.add(((Integer) callSegmentToCancel.invokeID), INVOKE_ID, Integer.class);
			}

			if (callSegmentToCancel.callSegmentID != null) {
				xml.add(((Integer) callSegmentToCancel.callSegmentID), CALL_SEGMENT_ID, Integer.class);
			}

		}
	};
}
